Stacey Castor, 41, is shown here on the day of her wedding to
David Castor in August 2003.
Stacey is at the

center of a web of lies
linked to the deaths of David and a previous husband,
as well as the
overdose of her daughter, Ashley Wallace, 21. Clockwise from left:
Chauncey
Eaton, David Castor, Stacey Castor, Judie Eaton, Bree
Wallace, Ashley Wallace.

Stacey Castor and her first husband, Michael Wallace, had two
daughters, Ashley and Bree Wallace.
The husband and wife had been
married for 10 years when Michael died suddenly at the age of
38.
Stacey called Michael "the love of her life." Clockwise from top:
Ashley Wallace, Stacey
Castor, Bree Wallace, Michael Wallace.
(Courtesy Ashley Wallace)

Ashley Wallace was 11 years old when her father, Michael Wallace,
died. Ashley's mother,
Stacey Castor, told ABC News that her
daughter "blamed herself for a long time…said
that it was her fault
that her father had died." (Courtesy Ashley
Wallace)

After coping with the death of their father, Bree and Ashley
Wallace clung to their close relationship
with mother, Stacey
Castor. "We all used to eat dinner together…laugh and joke around,"
said
Bree, now 18. "It just used to be me, her, and my sister…all of
us girls and we did a lot of things
together." From left to right:
Bree Wallace, Stacey Castor, Ashley Wallace.
(Courtesy Dani Colman)

Although Michael Wallace's determined cause of death was heart
attack, an autopsy had not
been performed. Seven years after he
died, investigators exhumed Michael's body, which
revealed traces of
ethylene glycol, a chemical found in antifreeze. Police concluded
that
Michael was murdered. (Courtesy Onandaga
County)

Bree Wallace, pictured here, believes her father and stepfather
died at the hands of her mother,
Stacey Castor. Bree remembers her
father, Michael Wallace, would call her "princess."
(Courtesy Bree Wallace)

Stacey Castor is pictured here with her second husband, David
Castor. Stacey would
spend nearly
two years in jail before being
charged with David's murder.
(Courtesy Dani
Colman)

A young Ashley Wallace is pictured with little sister, Bree
Wallace. In 2007, Bree discovered her
sister struggling to stay
alive before Stacey Castor made a frantic call to 911. Ashley had
survived an overdose of pills and vodka she says were given to her
by her own mother.
Stacey Castor denies the allegation, telling ABC
News, "My kids were my life. I could
never do that to Ashley."
(Courtesy Bree Wallace)

This letter was found on Ashley Wallace's bed the day she was
rushed to the hospital. The typed
750-word suicide note confesses to
the murders of Michael Wallace and David Castor, including
details
only the killer would know. A jury would decide if they believed
Ashley left this note
behind and tried to kill herself.
(Courtesy Onandaga County)

Stacey Castor sat down with ABC News' David Muir to tell her
version of how her first
and second husbands
died. She denied any
involvement in their murders and shockingly
pointed the finger at an
unlikely suspect.
(Courtesy Ashley Wallace)

Ashley Wallace remembers happier times when mother, Stacey
Castor, "would take us on trips, make
us laugh, sit and have
conversations with me for hours on end." In addition to being
charged with
the murder of her second husband, Stacey was charged
with attempting to murder Ashley in 2007.
From left to right: Stacey
Castor, Bree Wallace, Ashley Wallace.
(Courtesy
Lynn Pulaski)

Bree Wallace embraces her sister, Ashley Wallace, after they hear
the verdict in their mother's trial.
(ABC News)